Please refer to the original article and search for ‘But the work has not been going very smoothly’. Also, check out the link posted by smoody and search for ‘n

Please refer to the original article and search for ‘But the work has not been going very smoothly’. Also, check out the link posted by smoody and search for ‘nerve-wracking moment for the drillers’. We don't want antifreeze and other stuff to get into the clear water underneath, I guess.